<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <h1>接收处理xml数据</h1>
  <button>点击我获取xml数据</button>
  <script>
    let btn = document.querySelector("button");
    btn.onclick = function () {
      let xhr = new XMLHttpRequest();
      xhr.open("get", "/getxml");
      xhr.send();
      xhr.onload = function () {
        if (xhr.status >= 200 && xhr.status < 300) {
          console.log(xhr.responseXML); // 获取后端发送过来的xml数据
          // 可以通过dom操作 来处理接收到的xml数据。
          let res = xhr.responseXML.querySelector("book1 name").innerHTML;
          console.log(res);
        }
      }
    }
  </script>

</body>

</html>